Very interesting stuff, but I thought that Star Trek was done on a shoestring and even had to borrow some of their "creatures/aliens" from "Voyage to the Bottom of the Sea." Is this incorrect?

I have no idea if the series rented creatures that had been previously used on that Irwin Allen series, but it certainly wasn't "done on a shoestring." Star Trek was an expensive, prestige production. As it went along, and the studio lowered the budget while the cast and others got contractual raises, there was certainly less money to go around.